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The top-end TeraStation 7120r Enterprise runs on a Intel Xeon E3-1275 CPU with 8 GB of DDR3 RAM, while the less-expensive TeraStation 7120r sports a Xeon E3-1225 and 4 GB of DDR3 RAM.

Both models have four Gigabit Ethernet ports that support failover and aggregation, six USB 2.0 ports, dual redundant hot-pluggable power supplies and two PCIe slots for adding optional USB 3.0 ports. 10 GbE and iSCSI offload adpaters are planned as future PCIe options.